Planetary transmission-gearing.



H. BARTSUH.

PLANETARY TRNSMlSSON GEAHNG@ APPLwAfUoN umn nu m4 1 24,834. Patented Jan. 12, 1915.

UNTED STTE QATE'T FFQE.

HANS BABTSCH, 0F ZEHLENDRF; NEAR BERLIN, (YiiANY.4

LANETARY TBANMISEON-GEARHG.

Speeicotion of Letters Patent.

Patented Jim. 'i 2L 1 Si Application led January 19.1914. Sei'iai No. SSJB-.

sion-(loziring, of which the foliowing is .a

specilioeitionV This invention relates to un in'inrovefl planetary transmission tearing and hns foy its object to provide :t compact transmission gearing While. enabling o. high veoo* ratio to be obtained. fi

The present invention consiste in the eniplovment of the known arrangement in which two coupled trains of wheels, ueh comprising :in inner. outer and intel'n'iediote wheel. are employed, one of the traine hovi'ng a planet wheel.

Accordingr to the present invention instead of coupling.: only one wheel of the one train with one wheel of the other train as has heretofore. heen' proposed, both the'onter and inner wheels of the one train are re Speotivefv coupled tno theontei" and inner Wheels. of the other train so us to rotate in unison therewith, tho 'two trains being of nneqiinl velocity rut-io so that, if the radins of the outer wheel of the one train is designated rl und that of the inner wheel of the Sarno trziin lr1. while the outer* and innerc wheels ofthe other train are designated cfg and 11" resow'tiveiv, the following variation will be obtained:

The nimmt flwel oi' the one train is oon shaft liv means of a iizink imox'modmte wheel of the in hxeci journals and neoted with one umn. while tho other ti'nin iw mounted muy' theieloie eerie ne the driving wheel.

if motion ,is inigmi ii to the twin whooe inteznierlieie scher-i jom'nsiied in fixed beinlinge the migruler velocities of the outer wheels and inne:` wheole will he x'esi'iectivelv equal sinoe theft' are coupled togetl'ier, but owing to the unequal ratio between the two trains the planet wheel will be subie-.ot to rolling conditione` Lliiiex'ent from` those of the fixed intermediate wheel of the othei train and will eonsequently travel :iroun transmitting its motion to the one shaft through the Granit ovm.

ln the limiting onsei that the 'vefietion epgroxiniates is to say when to equahty the velooitfvY of tunel oi' tho exif; oi wheel v-Jil approximate to newi tr my, i vom hi' velocita* tained so that it ze :olii ation ivlxieh tioiiizites :is from the ratio 'In order that that clearly onderetooii ie :icconipfmying drawing: hodimonts of the. inven eniple.

Figure 1 illustrates one foro: of' om' in vention insef'ztii'm. Fig. 2 ie. n plm; View partly in section of o slightly modified orn of Fig. i. Fig. E a fragmentary sitio i'ioi'f of the gearing' Shown in Fig.

A51 shown in Fig. l the two shafts Y; Y be coupled :are mounted at theirI en. suitable hearings carried ov :i attimi; The .shaft V carries :i spin' wheel F iwvofl on the shaft and which meelwss with in inf termodiote wheel (l stationzirilv limfnaili' intho stamiimi A eind engaging; in tio'i' with the internally toothed 'ox-heel?. wheels F, (l. i" vonsstiiute om tml-n of the' gearing" which oooh-fi is ii -i';-io;ift.i' il scribed with the other twin. ronipi'nng wheels D, E and C. The @giov iwf mounted upon the hub of the wheel h coupled therewith by menno of euren' thi-(i ed bolts a. The wheels F will 1');` emi Quontly rotate at. the sume :t hir wie i' The outer wheels C and C -iiiiilm-iif o' pled together by menige (f .ao it lzer guiar velocity :fisso winni. The e wheel C is monntofgl so os to freni); i" upon a boss e, the isoee e being lm veii o the Shaft TV ond having e frank arm .ic which munies tho planet Wheel E.

if. the outer fliun'ietors' of the wheels il C' are iespeoiveiy designated rf and sind those of the innei' wheels and i) iesgieo tively designated 7, and 12j', it vwill be geen that, when 'aon iii will evince rolling conditions different from those of the wheel G and consequentlv the planet wheel E will travel around and vthis rotation will be transmitted to the shaft W by the crank arm Ic. Asia very slow travel of the planet wheel can be obtained by suitable selectionA of the velocity ratio, a very high velocityratio can' be obtained and the variation may be effected either as already` stated by varying the size of the wheel D relatively to the wheel F, or by varying the size of the wheel C relatively to the wheel C or by both variations.-

* In the modification illustrated in. Figs. 2

.and 3 the stationarily journaled intermediate wheel G is adapted to constitutelthe driving wheel in which case the ratio of the wheels G and F also determines the velocity ratio of the gearing.

I claim: Y

1. A planetary transmission gearing consisting of two trains of wheels of unequal.

velocity ratio each comprising an inner, outer and intermediate Wheel, the inner wheels being connected tor rotate in unison and ,the outer wheels'being also connected to rotate in unison, a stationary 'journal forone intermediate wheel and means ,connectin ltheiother intermediate wheel with falsha t. l i

' 2. `A planetary transmission gearing contwo trains of wheels of unequal Vvelocity ratio each comprising an inner, oter and intermediate wheel, the inner `wheels being connected to rotate in unison and the outerr wheels being also connected to rotate in unison, a stationary journal for one intermediate wheel, lmeans connecting the other intermediate wheel with a shaft and means for transmitting. motion to the second inner wheel, two outer wheels rotatable in. unison with each other and meshing with said intermediate wheel and planet wheel respectively and means for transmitting motion from said planetary Wheel to e the other shaft.

4. In combination with two shaft ends, a planetary gearing for transmitting motion from one shaft to another having` two trains of wheels of unequal velocity ratio` consisting tof an inner, outer and intermeeach inner wheel, a planet wheel meshing with saiddiate wheel, comprising in combination, an

inner wheelon one shaft, a second inner wheel mounted to rotate therewith, tionarily journaled intermediate meshing with the irst-inentioned inner wheel, a planet wheel meshing with. said second inner wheel, a crank arm secured to the other shaft' and supporting said planet wheel and two outer wheels meshing with said intermediatewheel and planet wheel respectively and mounted to rotate in unison with each other on the crank-arm carrying shaft. v

In testimony whereof I have affixed my signature in presence of two witnesses.

. HANS BARTSCH.

Witnesses l/VoLnnMi-ui HAUPT,

HENRY HAsPER.

a stawheel 

